EVENT 103 Female 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Siena Oxby | 17 | S14 | Stockport Mo | 1:26.40 |
| 2 | 10 | Grace Jackson | 16 | | Co Salford | 1:05.90 |
| 3 | 16 | Aleksandra Moskwa | 16 | | Stockport Mo | 1:03.60 |
| 4 | 22 | Lucia Lesti | 15 | | Co Salford | 1:01.80 |
| 5 | 19 | Zahra Davies | 18 | | Co Manch Aq | 1:02.90 |
| 6 | 13 | Ella Faulkner | 15 | | Stockport Mo | 1:04.59 |
| 7 | 6 | Emily Wade | 16 | | Leyland Barr | 1:06.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 2 | Tylia Glynn | 18 | S14 | Knutsford | 1:17.40 |
| 2 | 11 | Henrietta Chick | 15 | | Crewe Flyers | 1:05.40 |
| 3 | 17 | Eve Horton | 18 | | Wigan BEST | 1:03.50 |
| 4 | 23 | Eliza Pinkstone | 19 | | Stockport Mo | 1:01.10 |
| 5 | 20 | Honor Luckhurst | 15 | | Preston | 1:02.90 |
| 6 | 14 | Jade Phiri | 18 | | Co Manch Aq | 1:04.55 |
| 7 | 7 | Vivien Wilkinson | 13 | | Wirral Metro | 1:06.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 5 | Peiqi Wu | 15 | | Stockport Mo | 1:06.88 |
| 2 | 12 | Gia Hothersall | 18 | | Wirral Metro | 1:04.74 |
| 3 | 18 | Lily O'Neill | 16 | | Stockport Mo | 1:02.90 |
| 4 | 24 | Jessica Calderbank | 27 | | Co Manch Aq | 59.35 |
| 5 | 21 | Naomi Parker | 18 | | Co Manch Aq | 1:02.00 |
| 6 | 15 | Ella Williams | 20 | | Preston | 1:04.17 |
| 7 | 9 | Libby Woods | 15 | | Wigan BEST | 1:06.44 |